Riga weather in August 2025

Expect daytime maximum temperatures of 21°C in Riga in August based on long-term weather averages. There are 7 hours of sunshine per day on average with 15 days with some rainfall and typically 76 mm of rainfall in the month.

  • 21°C maximum daytime temperature in August in Riga21
    21°C max day temperature
  • 7 hours of sunshine per day
  • 15 days with some rainfall in August in Riga15
    15 days with some rainfall
  • 12°C minimum night-time temperature in August in Riga12
    12°C min night temperature
  • 15 hours of daylight per day in August in Riga15
    15 hours of daylight per day
  • No heat & humidity in August in Riga0
    No heat & humidity
  • 76 mm monthly rainfall in August in Riga76
    76 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in August in Riga5
    5 (Moderate) UV index
  • 14°C sea temperature in August in Riga14
    14°C sea temperature

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The August weather guide for Latvia (Riga) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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How hot is it in Riga in August?

Daytime temperatures usually reach 21°C in Riga in August, falling to 12°C at night.

How sunny is it in Riga in August?

There are normally 7 hours of bright sunshine each day in Riga in August - that's 49% of daylight hours.

How warm is the sea around Riga in August?

The average sea temperature around Riga in August is 14°C.

Does it rain in Riga in August?

There are usually 15 days with some rain in Riga in August and the average monthly rainfall is 76mm.

Riga August sunrise & sunset times

Browse the sunrise and sunset times for Riga in August 2025. Select a month to view Riga sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 04:23 20:36
Saturday, 16th August 2025 04:53 20:01
Sunday, 31st August 2025 05:24 19:22

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